Animal Transport System

The cardiovascular system consists of the heart, blood and blood vessels. The cardiovascular system is the major transport of materials to and from the cells. Blood is carried from the heart around the body via the arteries and the blood is then carried back to the heart via the veins. The

The purpose of these experiments is to examine the driving force behind the movement of substances across a selective or semiperpeable plasma membrane. Experiment simulations examine substances that move passively through a semipermeable membrane, and those that require active transport. Those that move passively through the membrane will do so in these simulations by facilitated diffusion and filtration. The plasma membrane’s structure is composed in such a way that it can discriminate as to which substances can pass into the cell. This enables nutrients to enter the cell, while keeping unwanted substances out. Active

the movement of blood through the body via veins and arteries to deliver oxygen and nutrients and to remove carbon dioxide and waste.

Water flows from high water potential to low water potential. They have three routes for that: the transmembrane route (out of one cell, across a cell wall and into another cell), the symplastic route (via the continuum of cytosol) and the apoplastic route (via cell walls and extracellular spaces). Roots are another way for water uptake and transport (example: mycorrhizae and endodermis). This transport is regulated by the compartmental structure of plants. The concept of transpiration is made possible through adhesion and cohesion.

The stems and roots of plants contain two separate transport systems; xylem vessels and phloem tubes, of which neither transport oxygen as it is transported to cells by diffusion. The network of xylem vessels transports water and mineral ions from the roots to all other parts of the plant whereas phloem tubes transport food made in the leaves to all other parts of the plant. In the stems the tissue is collectively known as vascular tissue, within the roots they form a structure called the stele.

Blood has many functions and is a complex structure of cells and fluid. It helps fight bacteria, protect the body from infection, carry valuable sources of minerals and nutrients around the body, dispose of waste materials, keeps the body temperature regulated and helps with glandular distribution of hormones and enzymes.

The Circulatory System transports materials throughout the entire body. It transports nutrients, water, and oxygen to all the body cells and carries away wastes like carbon dioxide that body cells produce.

Blood is the major fluid that moves throughout the body, carrying nourishment to tissues and cells, while helping us maintain body temperature and body pH. The circulatory

Cardiovascular system, also referred as the circulatory system, is made up of the heart, blood and blood vessels that ensures nutrients and wastes are carried around the body. It is the transportation of oxygen, carbon dioxide and nutrients such as amino acids, electrolytes, to and from the cells in the body, in order to give nourishment and help in suppressing diseases.

Humans use a more intricate network of systems to keep the internal body conditions moist and nourished. The cardiovascular system is the primary network of tubules responsible for molecular transport. Humans extract nutrients, vitamins, and other vital compounds from food in the gastrointestinal tract; extraction of minerals, vitamins, blood, and vital compounds from liquids is done primarily in the glomerulus of the kidney (Raven et al., 2008). Once the necessary molecules are in the blood stream, the cardiovascular system delivers it to the desired tissue through diffusion. The cardiovascular system of humans uses the heart to circulate blood throughout the body. The human heart is composed of four chambers; the left atrium and left ventricle transport oxygenated blood from the heart to the rest of the body, incoming deoxygenated blood filters from the superior and inferior vena cava to right atrium and

A.5 Lymphatic system consists of lymph,lymph vessels,lymphatic capillaries and lymphatic nodes.Lymph is another type of fluid which is also involved in transportation.Some amount of plasma, proteins and blood cells,escape into the intercellular spaces through the pores present in the wall of capillaries,form lymph.Lymph is colorless and contains less proteins as compared to that in the blood.

Functioning as a rapid delivery system, bringing molecules of nutrients and oxygen to each cell, and enabling the diffusion process are the roles of the circulatory system. Through blood vessels, moved by the internal pump, the heart, blood carries molecules of nutrients and oxygen. In both systemic and pulmonary circuits, veins move blood towards the heart, while arteries transport blood away from the heart. Also entitled the blood circulatory system, the cardiovascular system

So what is blood? Blood is a type of connective tissue that is filled with cells and is suspended in a liquid extracellular matrix. It is responsible for transporting oxygen, carbon dioxide, nutrients, and waste throughout the entire body. In humans, approximately half of the entire blood volume consists of an extracellular matrix called plasma. The other half of the blood volume contains formed elements consisting of platelets, white blood cells, and red blood cells. These four units in blood have specific roles to help the body maintain its normal function. A disruption in one of these processes is often times due to a genetic

Multicellular organisms need transport system, transport systems are systems that carry everything around the body. Multicellular organisms need transport system, transport systems are systems that carry everything around the body. A single celled organism is an organism with only one cell whereas a multi-celled organism is an organism with more than one cell for example a single celled organism is bacteria and a multi-celled organism is humans and animals. The surface area to volume ratio of a single celled organism is larger than the surface area to volume ratio of a multi-celled organism. Small organisms don't need transport systems instead all substances are obtained by diffusion. As the organism is small diffusion is able to happen faster. However, large organisms do need transport systems, preferably circulation systems. They cannot rely on diffusion. For small organisms, the distance from the edge to the centre is < 0.5mm whereas for large organism, the distance from the surface to the centre is too big. Also for large organisms, diffusion depends on the volume and surface area, so as this organism has a large surface area to volume ratio, diffusion may be able to happen and if it does it happens faster. If the surface area to volume ratio is small then a circulatory system is needed. Examples of single-celled organism that use diffusion are bacteria whereas for multi-celled organism that use diffusion are jelly fish. Examples of multi-cellular

So, what is blood and why is it important? Blood is a thick fluid that feeds, takes away waste and carries oxygen to and from all cells. Not only does blood do the above things, but blood also helps to regulate temperature, fights off harmful invaders, and carries various chemicals for body functions (Roadman 407). That is why I hear people say, “blood is thicker than water” (www.redcrossblood.org). Blood is constantly being pumped through the heart either with oxygen or carbon dioxide. Not only is blood a fluid, but it’s a tissue as well because blood groups cells together within.